The Science Behind Coloring Eggs
Posted by Carlene GordonIn third grade science, students were asked why people add vinegar when they color eggs. After posing some interesting responses, students learned that the vinegar provides an acid, just as orange juice, lemon juice or even aspirin would. The acid works with the calcium carbonate of the egg shell to create more surface area to absorb the food coloring. We learned that to get the most vibrant eggs (without deteriorating the egg shell) we must find just the right mixture or pH level in a water and acid solution. Many beautiful, vibrant eggs were created in the process.
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